Transcription of Investigation and Remediation A Layman’s Guide …
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Investigation and Remediation A Layman’s Guide …
Since the promulgation ofUpdate III of EPA s SW-846,Test Methods for Evaluating SolidWaste, Physical/Chemical Methods, thedocument s new methods for volatileorganic compound (VOC) analysishave created apparent confusionthroughout much of the environ-mental community. In response tothis confusion, EPA released a memoon August 7 to clarify some of theissues. In this article, we ll addresssome of the key issues of concernand conclude with recommendationsto help you to decide which proto-cols to follow or understand the pros and consof the new VOC methods, let s re-view the most salient changes in thenew update. Changes in AnalyticalMethodsIn Update III, several obsoletepacked-column gas chromatographic(GC) methods have been deleted andreplaced with capillary GC , analytical methods 8010(halogenated hydrocarbons by GC),8020 (aromatic hydrocarbons byGC), and 8240 (VOCs by GC/MassSpectrometry (MS)) have been de-leted.
There are a few potential pitfalls with methanol preservation. First, because the shelf life of methanol is short, there is the possibility that the methanol could be conta-
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